diff --git a/network/common.c b/network/common.c
index 4704072..a223685 100644
--- a/network/common.c
+++ b/network/common.c
@@ -240,13 +240,15 @@ int bnep_if_down(const char *devname)
 
 int bnep_add_to_bridge(const char *devname, const char *bridge)
 {
-	int ifindex = if_nametoindex(devname);
+	int ifindex;
 	struct ifreq ifr;
 	int sk, err;
 
 	if (!devname || !bridge)
 		return -EINVAL;
 
+	ifindex = if_nametoindex(devname);
+
 	sk = socket(AF_INET, SOCK_STREAM, 0);
 	if (sk < 0)
 		return -1;